1. Fotokozani cholinga chavalavumu chipangizo kapena chipangizo
Dziwani momwe valavu imagwirira ntchito: mtundu wa cholumikizira chogwiritsidwa ntchito, kuthamanga kwa ntchito, kutentha kwa ntchito ndi njira yowongolera.
2. Sankhani mtundu wa valavu molondola
Kusankha koyenera mtundu wa valavu ndikofunikira kuti wopanga amvetse bwino njira yonse yopangira ndi momwe amagwirira ntchito. Posankha mtundu wa valavu, wopanga ayenera choyamba kumvetsetsa mawonekedwe ndi magwiridwe antchito a valavu iliyonse.
3. Dziwani maulumikizidwe a kumapeto kwa valavu
Pakati pa maulumikizidwe olumikizidwa ndi ulusi, maulumikizidwe a flange, ndi maulumikizidwe olumikizidwa kumapeto, awiri oyamba ndi omwe amagwiritsidwa ntchito kwambiri. Ma valavu okhala ndi ulusi makamaka ndi ma valavu okhala ndi mainchesi osakwana 50mm. Ngati mainchesi ndi akulu kwambiri, kukhazikitsa ndi kutseka gawo lolumikizira kudzakhala kovuta kwambiri. Ma valavu okhala ndi ulusi ndi osavuta kuyika ndikuchotsa, koma ndi olemera komanso okwera mtengo kuposa ma valavu okhala ndi ulusi, kotero ndi oyenera maulumikizidwe a mapaipi okhala ndi mainchesi ndi kupsinjika kosiyanasiyana. Maulumikizidwe olumikizidwa ndi oyenera kunyamula katundu wolemera ndipo ndi odalirika kuposa maulumikizidwe olumikizidwa ndi ulusi. Komabe, n'kovuta kumasula ndikuyikanso valavu yolumikizidwa ndi ulusi, kotero kugwiritsidwa ntchito kwake kumangokhala pazochitika zomwe nthawi zambiri zimatha kugwira ntchito modalirika kwa nthawi yayitali, kapena pomwe mikhalidwe yogwiritsira ntchito ndi yoopsa komanso kutentha kuli kwakukulu.
4. Kusankha zipangizo za valavu
Posankha zinthu za chipolopolo cha valavu, ziwalo zamkati ndi pamwamba pake potseka, kuwonjezera pa kuganizira za zinthu zakuthupi (kutentha, kupanikizika) ndi zinthu za mankhwala (kuwonongeka) kwa chinthu chogwirira ntchito, ukhondo wa chinthucho (chokhala ndi tinthu tolimba kapena chopanda) uyeneranso kumvedwa. Kuphatikiza apo, ndikofunikira kuyang'ana malamulo oyenera aboma ndi dipatimenti yogwiritsa ntchito. Kusankha koyenera komanso koyenera kwa zinthu za valavu kungapangitse kuti ntchito ikhale yotsika mtengo komanso magwiridwe antchito abwino kwambiri a valavu. Ndondomeko yosankha zinthu za thupi la valavu ndi: chitsulo chopangidwa ndi chitsulo cha carbon-chitsulo chosapanga dzimbiri, ndipo ndondomeko yosankha zinthu za mphete yotseka ndi: chitsulo cha rabara-mkuwa-alloy-F4.
5. Zina
Kuphatikiza apo, kuchuluka kwa madzi omwe akuyenda mu valavu kuyeneranso kudziwika, ndipo valavu yoyenera iyenera kusankhidwa pogwiritsa ntchito deta yomwe ilipo (mongamakatalogu azinthu zama valavu, zitsanzo za zinthu za ma valvu, ndi zina zotero).
Nthawi yotumizira: Meyi-11-2022
